Improvement in printing-presses



3 Sheets--Sheet 1.

P. NIEL. Printing-Presses.

Patented Dec. 8,1874.

YO-E GRAPHIC COJHQTO LITI'LSSS "rl PARK PLACE, N.Y.

, 3 Sheets--Sheet 3. P. NIEL. Printing-Presses.

Patented Dec. 8, 1874.

No,l57,459.

M`Mu- `impression.

PAUL NIEL, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF HIS RIGHT TO GEORGE O. HOLLIS, OF SAME PLAGE.

IMPROVEMENT IN PRINTINGjPRESSES.

Specification formingpart of Letters Patent No. lm/159, dated December 8, 1874; application filed January 31, 1874.

To all whom t may concern:

Be it known that I, PAUL NIEL, of the city of Brooklyn, in the county of Kings and State of New York, haveinvented certain new and u'sefu Improvements in Printing-Presses; and.

l do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, which forms a part of this specification.

This invention consists in the combination, with the type-bed of` a cylinder printing-press, of vertical griper carrying arms or standards attached or secured to the bed, whereby the sheet-carrying gripers are caused to advance to the cylinder-gripers with the bed, seize the printed sheet, and recede with the bed, and deposit the said sheet on the delivery-board with the printed side up, and all this without the employment of tapes or secondary cylinders, or any eXtra mechanism whatever for driving the said griper-carrying arms.

In the accompanying drawing, Figure l is a side elevation of a'type-cylinder printingpress with my improvements applied thereto, and showing the position of the parts immediately after the taking of the impression, and while the cylinder is at rest, the bed having reached its extreme limit of travel toward the rear end of the press. Fig. 2 is a plan or top view of the same. Fig. 3 is a side elevation of the press, showing the position of the parts just as the type-bed is about to proceed from the front end of the press to give the Fig. 4 is an enlarged vertical sectional view of the sheet-carrying device, showing the same in the act of seizing a printed sheetl from the cylinder. Fig. 5 is a perspective View of a complete stop-cylinder press containing all of my said improvements.

A A designate the side frames of the press, and B the stretchers or cross-stays. The

type-bed G is of the ordinary construction, and is arranged to travel back and forth on rollers or slides or ways in the usual manner. The said type-bed is provided with the usual rack to engage cogs on one head of the cylinder D for rotating the latter, a sufficient number of the cog-teeth on the cylinder being,

.be deposited on the pile.

however, omitted to permit the cylinder to be at rest during the return travel of the bed, and the usual stop-lever and cam may be employed for effecting the engagement of the said gearing, so as to rotate the cylinder when the bed has brought the type in proper position under the cylinder to take the impression. The cylinder-gripers a a, which hold the paper 011 the cylinder, may be actuated by any suitable means that will cause them, at `the proper time, to seize the sheet fed to them from the feed-board E, and open at theproper time to permit the printed sheet to be taken away to I designates a lever, which is pivoted at its upper end to the under side of the type-bed, (say as shown at c, Fig. 3,) and at its lower end to one end of a lever, J, which latter is pivoted at its other end to a central cross-stay, B, of the press-frame. I preferably construct the lever J of two separate bars, and pivot the lever I between these bars at their outer ends. L is a connectinglever attached at one end to the crank-pin K, and at its other end it is pivoted to the lever I. This system of levers. connected and arranged as I have described them, serve to drive the type-bed at a practically uniform rate of speed during the whole time that the impression is being taken from the type, and they serve, also, to counteract or diminish the force or impetus of the crank just before the bed reaches the ex treme limits of its motion in each direction, and hence the bed is caused to start and stop with a slow steady motion. M M designate the griper-carrying arms or standards. These arms or standards project up vertically from the type-bed, at opposite sides thereof, and they are securely attached to the bed near the forward end thereof. In the present instance each side frame A is provided with a longitudinal slot, p, and the lower ends of the standards are bent or made angular, and these angular or horizontal portions are passed through the said slots p and bolted to the edge or side of the bed; but of course it is obvious that the standards may be attached in various ways: for instance, the bed may have lugs cast upon it, which lugs may project through the slots p p, and standards without angular ends may be secured to 2 asma@ d such lugs. N and O are two rods extending from the standard M on one side of the machine to the standard M on the opposite side of the machine, and to these rods are secured the sheet-carrying gripers e e. These gripers are composed of stationary rests e and movable ngers e. The rests c are secured to the rod N, which. is stationary, and the tingers e to the rod O, which is journaled in the said standardsv and arranged to oscillate, so as to permit the movable ngers to close against the rests e. It is immaterial whether the gripers be arranged to be open or closed when in their idle condition. In Figs. 1 and 3 I have shown them as being open when they approach the cylinder, where they are closed upon the edge of the printed sheet delivered to them by a bracket, Q, which tripsa toe so arranged in connection with a spring that the rod O will be held with its lingers e pressing against the rests c, as in Fig. 1, or

vaway from them, as in Fig. 3, accordingly as the toe is tripped. Another bracket, It, at thev forward end of the delivery-board serves to trip the said toe and open the gripers to drop the printed sheet at the proper place ou the delivery-board or pile of sheets thereon.

It will thus be seen that in these Figs. l and 3 the gripers remain open or closed accordingly as the toe is tripped. In Fig. 5 the gripers are always closed when in their normal condition, and are only opened at the cylinder-to permit them to seize the sheet, and at the forward end of the press, to permit them to drop the sheet. To effect this a spring is applied to the rod O, so as to continually and rod I), overcomes the force. of the said spring, and oscillates the rod O sufficiently to open the gripers and permit the sheet to drop,

as shown in said Fig. 5. When the standards M reach the cylinder the said roller rides on an oscillating incline, g, so as to open the gripers in the manner before stated. But here the roller rides clear over the incline g at the full completion of this kstroke of the bed, and therefore the gripers at once close upon the edge of the printed sheet, and on the return of the bed the roller depresses the incline g and passes over it without being affected.

What I claim as my invention, and desire to secure by Letters Patent, is-

'The combination, in a printing-press, of the following elements: the stop-cylinder D, the traveling type-bed C, the rigid vertical standards M M, provided with gripers e e', the said standards being secured directly to the bed,

so as to be moved bodily by the bed whenever the bed moves, and be at rest when the bed is at rest, all substantially as and for the purpose 

